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Two solid spheres have volumes 250cmo and 128cmo respectively. Find the ratio of their radii.

Mathematics
WAEC 1994
Two solid spheres have volumes 250cmo and 128cmo respectively. Find the ratio of their radii.
  • A. 125:64
  • B. 25:16
  • C. 2:1
  • D. 4:3
  • E. 5:4
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Correct Answer: Option E
Explanation
4/3πR3/4/3πr3
=
250/180
= (R/r)3 = 5:4
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